[Speaking - Professor Barry Watson Direct CARRS-Q, QUT]
The simple truth about speeding is that the faster you go the longer it takes to stop.
Here’s a comparison.
This is a car travelling at 60km/h and braking suddenly.
Here’s the same car, travelling at 67km/h and braking at the exact same point.
This time the car hits, still travelling at 30km/hr. The difference could be a matter of life or death.